Probably passive participle of cuwr; turned off, i.e. Deteriorated -- degenerate.

see HEBREW cuwr

wə·yā·sêr — 3 Occ.
wə·yā·sî·rū — 1 Occ.
wə·yā·sūr — 1 Occ.
yā·sêr — 1 Occ.
yā·sîr — 7 Occ.
yā·sî·rū — 2 Occ.
yā·sūr — 15 Occ.
yā·su·rū — 3 Occ.
yə·sî·ren·nāh — 6 Occ.
yū·sar — 1 Occ.
sūr — 1 Occ.
hă·sî·ṯə·ḵā — 1 Occ.
hê·sat·tāh — 1 Occ.
hĕ·sî·ṯə·ḵā — 1 Occ.
his·sî·ṯū·ḵā — 1 Occ.
mas·sîṯ — 2 Occ.
way·yā·seṯ — 2 Occ.
wat·tə·sî·ṯê·hū — 2 Occ.
wat·tə·sî·ṯê·nî — 1 Occ.
way·sî·ṯê·hū — 1 Occ.